<h4>Tool</h4><table border="0"><tr><td valign="top"><b>Name</b></td><td valign="top">Terrain Map View</td></tr><tr><td valign="top"><b>ID</b></td><td valign="top">8</td></tr><tr><td valign="top"><b>Author</b></td><td valign="top">Copyrights (c) 2014 by Volker Wichmann</td></tr><tr><td valign="top"><b>Specification</b></td><td valign="top">grid</td></tr></table><hr><h4>Description</h4>This tool allows one to create different terrain visualisations from an elevation dataset:

* Topography: a simple map with an analytical hillshading of the terrain

* Morphology: a map which visualizes the terrain by combining positive and negative openness (Yokoyama et al. 2002) with terrain slope in a single map. In contrast to conventional shading methods this has the advantage of being independent from the direction of the light source.

References:
Yokoyama, R. / Shirasawa, M. / Pike, R.J. (2002): Visualizing topography by openness: A new application of image processing to digital elevation models. Photogrammetric Engineering and Remote Sensing, Vol.68, pp.251-266. <a target="_blank" href="http://info.asprs.org/publications/pers/2002journal/march/2002_mar_257-265.pdf">online at ASPRS</a>.

<hr><h4>Parameters</h4><table border="1" width="100%" valign="top" cellpadding="5" rules="all"><tr><th>Name</th><th>Type</th><th>Identifier</th><th>Description</th><th>Constraints</th></tr>
<tr><th colspan="5">Input</th></tr><tr><td>DEM </td><td>Grid (input)</td><td>DEM</td><td>Digital elevation model.</td><td></td></tr><tr><th colspan="5">Output</th></tr><tr><td>Shade (*)</td><td>Grid (optional output)</td><td>SHADE</td><td>The shaded DTM.</td><td></td></tr><tr><td>Openness (*)</td><td>Grid (optional output)</td><td>OPENNESS</td><td>The difference of positive and negative openness.</td><td></td></tr><tr><td>Slope (*)</td><td>Grid (optional output)</td><td>SLOPE</td><td>The calculated terrain slope [radians].</td><td></td></tr><tr><td>Contours (*)</td><td>Shapes (optional output)</td><td>CONTOURS</td><td>The generated contour lines.</td><td></td></tr><tr><th colspan="5">Options</th></tr><tr><td>Method</td><td>Choice</td><td>METHOD</td><td>Choose the map type to generate.</td><td>Available Choices:
[0] Topography
[1] Morphology
Default: 0</td></tr><tr><td>Radial Limit</td><td>Floating point</td><td>RADIUS</td><td>Radial search limit for openness calculation.</td><td>Minimum: 0.000000
Default: 1000.000000</td></tr><tr><td>Contour Lines</td><td>Boolean</td><td>CONTOUR_LINES</td><td>Derive contour lines.</td><td>Default: 1</td></tr><tr><td>Equidistance</td><td>Floating point</td><td>EQUIDISTANCE</td><td>Contour lines equidistance [map units].</td><td>Minimum: 0.000000
Default: 50.000000</td></tr></table>(*) <i>optional</i>